Pressure-regulator



(No Model.)

0. EURIGH.

PRESSURE REGULATOR.

No. 889,065. Patented Sept. 4, 1888.

UNITED STATES OONltAlD EUBICH, OF PITTSBURG,

ASSIGNOR OF ONE-HALF TO JOHN EURIGH, OF ALLEGHENY COUNTY, PENNSYLVANTA.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 389,065, datedSeptember a, 1888.

(No model.)

To all whom it may concern:

Be t known that I, Conniun Eomon, acitinon of the United States,residing at Pittsburg, 1n the county of Allegheny and State ofPennsylvania, have invented certain new and usef ul Improvements inPressure-Regulators; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same,reference being had to the accompanying drawlugs, which form a part ofthis specification.

My invention relates to an improvement in pressure-regulators, theobject being to close the valve against the diaphragm, and thereby avoidany quick movement of the same and prevent knocking This I accomplish bycertain details of construction and combinanon of parts, as will befully set forth hereinafter.

In the accompanying drawings, Figure l is asectioual elevation of myimproved pressureregulator constructed in accordance with my invention.Fig. 2 is a sectional plan view of the same, taken on the line x :0.

To put my invention into practice, I provide a cylindrical box, a,divided by partitions into a number of compartments, the largest ofwhich, I), is covered with a cap, 0, and securely attached to the box a.by a number of bolts (2. Through the center of this box a is a verticalvalve-rod, 6, having rigidly attached thereto two valves, f, each havinga seat formed in the partitions g, which divide the lower portion of thebox a into three compartments, h t. These two valves f are made ofdifferent sizes, so that the area or surface of the valves against whichthe gas presses is different, the lower valve being smaller than theupper to permit the gas under high pressure to elevate the valves androd. Attached to two of these chambers h i is the inlet-pipe k andoutlet Z, the first-mentioned pipe, 5, carrying a high pressure of gasor other substance, and the other, by means of the working of the valvef, a low or moderate pressure.

Between the top chamber, 1), and that, h, beneath IS a valve-seat formedin the dividingwall at between the two chambers b h, in which seat aloose valve, 01, is made to operate. Theloose sliding valve a isnormally elevated 01? 1ts seat when the valves f f are closed by meansof a system of levers, p 1), connected to said valve and thevertically-movable valverod 6. The upper lever, 1), is fulcrumed at anintermediate point of its length to an upright arn1 ,w, of a fixture,10, secured to the dividingwall or of the upper large chamber, b, inwhich chamber the system of lovers is located, and one end of said leverhas a slotted connection with the valve-rod e, as at 19", while theother end thereof is connected to the lower lever, 19, by anintermediate link, 12 This lower lever is fulcrumed at one end to thefixture w, and has a slotted connection at an intermediate point of itslength with sliding valve or, as at p. (Clearlyshownin Fig.1.)Theslidingvalvc it moves in a reverse direction to the valves f and rod2, being seated when the latter are elevated by the system of leversdepressing the same, and this movement of the levers and valve isassisted by means of coiled springso. Through the valve n is formed atransverse opening, Q, to allow the gas to escape slowly from the largerchamber, 1), to the next largest chamber, 71, beneath the same, withwhich chamber h communicates the low-pressure pipe Z.

Between the top flange of the upper chamher, I), and the cap 0 is aflexible diaphragm, r, secured rigidly at its center to the valve-stem eby means of suitably-constructed washers 8. Several weights, it, placedon the top of the valve-stem aserve as a means for regulating theopening and closing of the valve f.

In operation the gas under high pressure elevates the different-sizedvalvcsf and rod 6 a sufficient distance oil the seats to permit the gasto enter the chambers h and b, the valve n being opened and the levers pp and valve being unaffected by this initial movement of the valves fand rod e by reason of the slotted connections between the rod 6, valveor, and levers p12. The gas entering the chamber In acts against thediaphragm therein to wholly elevate the valve-rod e and valves f, and onthe further upward movement of the Valverod the lovers p p are depressedto force the valve to its seat, and thus cause the gas to es cape fromthe chamber I) through the ports q into the chamber h and low-pressurepipe, thus obviating the quick or rapid return of the valves f to theirseats.

Having thus described my invention, what I the stem e, the springs 0,one or more openings, q, through the said valve 72, and connec- 5 tionsbetween the valve-rod e and the valve n for operating the same,substantially as described.

In testimony that I claim the foregoing I hereunto afifix my signaturethis 6th day of 20 January, A. D. 1888.

CONRAID EURIOH. [L.

In presence of O. 0. LEE, M. E. HARRISON.

